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;;;-*- Mode:Common-Lisp; Package:PICTURES; Base:10 -*-
;;;
;;;
;;;
;;; TEXAS INSTRUMENTS INCORPORATED
;;; P.O. BOX 149149
;;; AUSTIN, TEXAS 78714-9149
;;;
;;; Copyright (C)1987,1988,1989,1990 Texas Instruments Incorporated.
;;;
;;; Permission is granted to any individual or institution to use, copy, modify,
;;; and distribute this software, provided that this complete copyright and
;;; permission notice is maintained, intact, in all copies and supporting
;;; documentation.
;;;
;;; Texas Instruments Incorporated provides this software "as is" without
;;; express or implied warranty.
;;;
;;; Authors: Delmar Hager, James Dutton, Teri Crowe
;;; Contributors: Kerry Kimbrough, Patrick Hogan, Eric Mielke
(in-package "PICTURES")
(DEFMACRO with-vector (avector &body body)
`(let ((,avector (get-global-vector)))
(LET ((value (PROGN ,@body)))
(return-global-vector ,avector)
value)))
(DEFMACRO with-extent-corners (extent xmin ymin xmax ymax &body body)
`(LET ((,xmin (extent-rect-xmin ,extent))
(,ymin (extent-rect-ymin ,extent))
(,xmax (extent-rect-xmax ,extent))
(,ymax (extent-rect-ymax ,extent)))
,@body))
(DEFMACRO with-extent-values (extent xmin ymin xmax ymax width height
&body body)
`(LET ((,xmin (extent-rect-xmin ,extent))
(,ymin (extent-rect-ymin ,extent))
(,xmax (extent-rect-xmax ,extent))
(,ymax (extent-rect-ymax ,extent))
(,width (- (extent-rect-xmax ,extent)(extent-rect-xmin ,extent)))
(,height (- (extent-rect-ymax ,extent)(extent-rect-ymin ,extent))))
,@body))
(DEFMACRO with-special-vector (avector &body body)
`(let ((,avector (get-global-vector)))
(DECLARE (SPECIAL ,avector))
(LET ((value (PROGN ,@body)))
(return-global-vector ,avector)
value)))
(DEFMACRO drawbox-with-gc (view highlight-color fixed-x fixed-y px py)
`(using-gcontext
(gc :drawable ,view
:function boole-xor
:foreground ,highlight-color)
(draw-rectangle view gc
(MIN ,fixed-x ,px)
(MIN ,fixed-y ,py)
(ABS (- ,fixed-x ,px))(ABS (- ,fixed-y ,py)))))
(defmacro drawbox (fixed-x fixed-y px py)
`(draw-rectangle view gc
(MIN ,fixed-x ,px)
(MIN ,fixed-y ,py)
(ABS (- ,fixed-x ,px))(ABS (- ,fixed-y ,py))))
(DEFMACRO drawlines-with-gc (view highlight-color vertices)
`(using-gcontext
(gc :drawable ,view
:function boole-xor
:foreground ,highlight-color)
(draw-lines view gc ,vertices)))
;;#+nil ;; pw--This seems pretty messed up. See new attempt next.
(DEFMACRO visible-p (graphic)
`(AND (NOT (AND (and min-x min-y width height) ; Was optional rect given
(not (graphic-within-p
,graphic min-x min-y width height))
(not (graphic-intersects-p
,graphic min-x min-y width height))))
(PROGN
(UNLESS (valid-extent-p (graphic-extent ,graphic)))
(>= (* (view-scale view) (- (extent-rect-xmax extent)
(extent-rect-xmin extent))) 1)
(>= (* (view-scale view) (- (extent-rect-ymax extent)
(extent-rect-ymin extent))) 1))
(viewable-p ,graphic)))
(DEFMACRO visible-p (graphic)
`(AND (NOT (AND (and min-x min-y width height) ; Was optional rect given
(not (graphic-within-p
,graphic min-x min-y width height))
(not (graphic-intersects-p
,graphic min-x min-y width height))))
(valid-extent-p (graphic-extent ,graphic))
#+nil
(plusp (* (view-scale view) (- (extent-rect-xmax extent)
(extent-rect-xmin extent))))
#+nil
(plusp (* (view-scale view) (- (extent-rect-ymax extent)
(extent-rect-ymin extent))))
(viewable-p ,graphic)))
(DEFMACRO change-base-x (x extent width gravity)
`(COND
((OR (EQ :southwest ,gravity)
(EQ :west ,gravity)
(EQ :northwest ,gravity)) ,x)
((OR (EQ :north ,gravity )
(EQ :south ,gravity)
(EQ :center ,gravity))
(+ ,x (/ (- (- (extent-rect-xmax ,extent)
(extent-rect-xmin ,extent))
,width) 2.0)))
(t (+ ,x (- (- (extent-rect-xmax ,extent)
(extent-rect-xmin ,extent))
,width)))))
(DEFMACRO change-base-y (y extent height gravity)
`(COND
((OR (EQ :southwest ,gravity)
(EQ :south ,gravity)
(EQ :southeast ,gravity)) ,y)
((OR (EQ :east ,gravity )
(EQ :west ,gravity)
(EQ :center ,gravity))
(+ ,y (/ (- (- (extent-rect-ymax ,extent)
(extent-rect-ymin ,extent)
) ,height) 2.0)))
(t (+ ,y (- (- (extent-rect-ymax ,extent)
(extent-rect-ymin ,extent))
,height)))))
(DEFMACRO point-near-line (vertices pixel x y)
`(DO ((sx 0 (+ sx 2))
(sy 1 (+ sy 2)))
((> (+ sy 2) (FILL-POINTER ,vertices))
(point-on-line-p ,pixel ,x ,y
(ELT ,vertices 0)
(ELT ,vertices 1)
(ELT ,vertices sx )
(ELT ,vertices sy )))
(WHEN (point-on-line-p
,pixel ,x ,y (ELT ,vertices sx)(ELT ,vertices sy)
(ELT ,vertices (+ sx 2))(ELT ,vertices (+ sy 2))) (RETURN t))))
(defmacro copy-to-vector (source result)
"copy the source SOURCE sequence into the RESULT vector"
`(WHEN (NOT (EQ ,source ,result) )
(SETF (FILL-POINTER ,result) 0)
(DOTIMES (i (LENGTH ,source))
(VECTOR-PUSH-EXTEND (elt ,source i) ,result))))
(DEFMACRO copy-to-point-seq (source result)
`(PROGN
(WHEN (NOT (EQ ,source ,result))
(IF (LISTP ,result)
(LET ((source-length (1- (LENGTH ,source))))
(SETq ,result (LIST (ELT ,source 0)))
(DO ((i 1 (1+ i)))
((> i source-length))
(NCONC ,result (LIST (elt ,source i)) )
)
)
(PROGN
(SETF (FILL-POINTER ,result) 0)
(DOTIMES (i (LENGTH ,source))
(VECTOR-PUSH-EXTEND (elt ,source i) ,result)))))
,result))
(DEFMACRO process-motion-notify-events (view display fixed-x
fixed-y px py highlight-color)
`(LET ((display-after-func (display-after-function ,display))
(events-enabled-p (graphic-events-enabled-p view)))
(UNWIND-PROTECT
(progn
(SETF (display-after-function ,display) #'display-force-output)
(SETF (graphic-events-enabled-p view) nil)
(drawbox-with-gc ,view ,highlight-color ,fixed-x ,fixed-y ,px ,py)
(grab-pointer ,view #.(make-event-mask
:button-release :pointer-motion) :owner-p t)
(CATCH :release
(LOOP
(process-next-event ,display )))
(drawbox-with-gc ,view ,highlight-color ,fixed-x ,fixed-y ,px ,py)
(SETF (display-after-function ,display) nil))
(PROGN
(SETF (graphic-events-enabled-p view) events-enabled-p )
(ungrab-pointer ,display)))
(SETF (display-after-function ,display) display-after-func)))
; - - - - - - - - identifier macros for save/restore - - - - - - -
(defmacro executable-form-p (form)
"Recognizes forms like make-array, make-hash-table ..."
`(and (consp ,form)
(symbolp (car ,form))
(not (keywordp (car ,form)))
(symbol-function (car ,form))))
(defmacro make-form-p (form)
"Recognizes forms like make-circle, make-line, make-image-x..."
`(and (executable-form-p ,form)
(or (eq (symbol-package (car ,form)) (find-package 'pictures))
(eq (symbol-package (car ,form)) (find-package 'xlib)))
;; really should do the next test, but its too expensive
;;(string-equal "make-" (format nil "~a" (car ,form)) :end1 5 :end2 5)
))
(DEFVAR *gstate-index*
'((foreground 0)
(pictures::background 1) ;;to avoid conflict with clue::background
(line-style 2)
(stipple 3)
(line-width 4)
(function 5)
(dash-offset 6)
(dashes 7)
(tile 8)
(fill-rule 9)
(fill-style 10)
(cap-style 11)
(join-style 12)
(pictures::font 13)
(arc-mode 20)
(ts-x 15)
(ts-y 16)
(clip-mask 17)
(clip-x 18)
(clip-y 19)
(stipple-pix 14)
))
(DEFVAR *gstate-type-alist*
'(
(:function ( null boole-constant))
(:foreground ( string pixel list))
(:background ( string pixel list))
(:plane-mask ( null pixel))
(:dash-offset ( null card16))
(:ts-x ( null int16) )
(:ts-y ( null int16) )
(:clip-x ( null int16) )
(:clip-y ( null int16))
(:line-style ( null (member :solid :dash :double-dash)))
(:line-width (null number))
(:cap-style ( null (member :not-last :butt :round :projecting)))
(:join-style ( null (member :miter :round :bevel)))
(:fill-style ( null (member :solid :tiled :opaque-stippled :stippled)))
(:fill-rule ( null (member :even-odd :winding)))
(:arc-mode ( null (member :chord :pie-slice)))
(:stipple ( null symbol list image))
(:stipple-pix ( null pixmap))
(:tile ( null symbol list image) )
(:font ( null font))
(:fontname (NULL stringable))
(:subwindow-mode ( null (member :clip-by-children :include-inferiors)))
(:exposures ( null (member :on :off)))
(:clip-mask ( null (member :none) symbol rect-seq))
(:clip-ordering ( null (member :unsorted :y-sorted :yx-sorted :yx-banded)))
(:dashes ( null card8 sequence)))) ;Gstate Class Definition:
;;; CMUCL optimization note. Little chance here as both NIL and float
;;; values with be stored as descriptor objects.
#-cmu
(defstruct extent-rect
xmin ymin xmax ymax)
#+cmu
(defstruct extent-rect
(xmin 0s0 :type extent-element)
(ymin 0s0 :type extent-element)
(xmax 0s0 :type extent-element)
(ymax 0s0 :type extent-element)
(valid nil :type (member t nil)))
(defmacro with-coercion((vars type) &body body)
(flet ((varname (v)
(if (symbolp v) v (cadr v)))
(varform (v)
(etypecase v
(symbol
`(,v (coerce ,v ',type)))
(list
`(,(car v) (coerce ,(cadr v) ',type))))))
`(let ,(mapcar #'varform vars)
(declare (type ,type ,@(mapcar #'varname vars)))
,@body)))
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